Apple patents notebook with big touchpad

Apple recently filed a patent for a "tounchpad", which may be used for a multi-touch iBook:

Apple's patent proposes is a combination of sensors and intelligence to monitor a user's hands. When typing, a tounchpad (or touchpad bar that runs the width of the keyboard) "sees" nothing but the wrists or arms of the user. When a touchpad is being used, the touchpad "sees" the circular impression of a finger.